In the ONAP installation the vvp-ext-haproxy (maybe also others) can reserve node ports, which are used by other ONAP services.

root@onap-onap-oom-tm-rancher:~# kubectl get services -n onap |grep 229
vvp-ext-haproxy NodePort 10.43.97.147 <none> 80:30229/TCP,443:30690/TCP,22:32494/TCP,9000:30763/TCP 14m

Here it blocks 30229, used by AAI Model loader.
This blocks the installation of AAI:

++ helm install local/aai -n aai --namespace onap -f /root/integration-override.yaml
Error: release aai failed: Service "aai-modelloader" is invalid: spec.ports[1].nodePort: Invalid value: 30229: provided port is already allocated

20190111 3.0.0-ONAP
currently 30298 is reserved for LOG - but is being used by vvp without a reservation
onap vvp-int-haproxy NodePort 10.43.12.68 <none>

Raised VVP-129

onap vvp ClusterIP 10.43.228.193 <none> 8181/TCP 3d
onap vvp-ci-uwsgi ClusterIP 10.43.212.158 <none> 8282/TCP 3d
onap vvp-cms-uwsgi ClusterIP 10.43.37.200 <none> 80/TCP 3d
onap vvp-em-uwsgi ClusterIP 10.43.59.232 <none> 80/TCP 3d
onap vvp-ext-haproxy NodePort 10.43.130.24 <none> 80:30671/TCP,443:32054/TCP,22:30173/TCP,9000:31309/TCP 3d
onap vvp-gitlab NodePort 10.43.37.206 <none> 80:31481/TCP,22:31975/TCP 3d
onap vvp-imagescanner ClusterIP 10.43.173.176 <none> 80/TCP 3d
onap vvp-int-haproxy NodePort 10.43.12.68 <none> 80:30298/TCP,8080:30021/TCP,9000:30605/TCP 3d
onap vvp-jenkins NodePort 10.43.250.191 <none> 8080:32022/TCP 3d
onap vvp-postgres ClusterIP 10.43.31.72 <none> 5432/TCP 3d
onap vvp-redis ClusterIP 10.43.47.60 <none> 6379/TCP 3d